The schematic editor allows you to create a symbolic easy-to-read representation of your design.

Layout Editor

The layout editor brings your design to life.
The board represents the physical reality of your design.

Autorouting

The autorouter is a useful tool for placing copper traces between components.

Export Gerber, BOM and SVG

The online export options allow you to export to a variety of formats to share and manufacture your work.

Pros and Cons:

Pros: Eagle CAD is easy for hobbyist just starting out with printed circuit CAD designs and includes free options for limited versions of the tool.

Cons: This software is not mainstream with corporate businesses that have internal PCB designers. Also, to use this tool for higher technology boards requires more manual calculations and routing compared to the higher-end CAD tools.